I like this stuff and I'd like to imagine what the cycle of improving these looks like.
I played around with the admin interface a little, but it wasn't clear how I could add a property that is defined in Wikidata, such as the electronegativity or the oxidization states. There is also the issue that other properties that I don't see populated for Wikidata here such as boiling point, melting point, etc.
Right now I think the 3d display modes are flashy but don't deliver real value. With more data, however, you could do some interesting things.
Also I am curious about the data model, it looks like a "property" here is something like a relational table row, is it?